<!DOCTYPE html>
<html>
<head>
    <title>CSS Reftest Reference</title>
    <link rel="author" title="Jun Ichikawa" href="mailto:jun1ka0@gmail.com">
    <link rel="reviewer" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
    <style type="text/css">

        div.brightness_hundred {
            width: 200px;
            height: 200px;
            background-color: rgb(0, 255, 0);
        }
    </style>
</head>
<body>
    <p>You should see green rectangle.</p>
    <div class="brightness_hundred"></div>

</body>
</html>
